Citrus vein phloem degeneration detection and classification method based on D-S theory through multi-source data fusion

Abstract

The invention discloses a citrus vein phloem degeneration detection and classification method based on the D-S theory through multi-source data fusion. The method includes utilizing a hyperspectral image collecting platform, a visible spectrum image collecting platform and a fluorescence spectra image collecting platform to collect image information of citrus leaf samples, performing classification of the symptoms of the citrus vein phloem degeneration on the various spectrum collected image information, and acquiring the identification rate of each classification of the symptoms of three varieties of spectrum; allowing the identification rates of three varieties of spectrum to serve as evidence sources, allocating PBA values to each proposition of an evidence identifying frame, and establishing credibility vectors of the evidence sources; allowing the credibility to serve as a discount factor to adjust the BPA values to each proposition of the evidence identifying frame; fusing the adjusted BPA values according to a Dempster combination rule, acquiring a comprehensive identification rate of the symptoms of the citrus vein phloem degeneration, and implementing correct diagnosis of the symptoms of the citrus vein phloem degeneration. According to the method, the identification rates of the hyperspectrum, visible spectrum and fluorescence spectra are fused, the comprehensive identification rate of the symptoms of the citrus vein phloem degeneration is acquired, and the correct diagnosis of the symptoms of the citrus vein phloem degeneration is implemented.

Description

technical field [0001] The invention relates to a detection and classification method for citrus Huanglongbing, in particular to a multi-source data fusion detection and classification method for citrus Huanglongbing based on D-S theory, and belongs to the field of citrus Huanglongbing detection. Background technique [0002] Citrus Huanglongbing (Liberobacter asiaticum) is a worldwide citrus disease. In my country, it is mainly distributed in Guangdong, Guangxi, Fujian, Taiwan, Hainan, Yunnan, Guizhou, Sichuan, Zhejiang, Hunan, Jiangxi and other provinces. In South Africa, India and Southeast Asian countries, the disease was once called Greening. In 1995, at the 13th International Conference of Citrus Virologists, it was unanimously approved to use Citrus HuangLongbing as the correct name for this kind of disease. The disease is extremely harmful to citrus production, and susceptible citrus varieties may lose their ability to bear fruit within 3 to 5 years, or even die. ...

AI Technical Summary

Problems solved by technology

The disadvantage is that it takes a long time to diagnose the disease in time; the electron microscope observation method can use electron microscope, projection fluorescence microscope, optical microscope and other auxiliary equipment to observe specific disease symptoms, so as to determine the HLB pathogen

Because the concentration of HLB bacteria in citrus trees is low and the distribution is uneven, it is difficult to observe. In addition, the electron microscope equipment is expensive, which makes it difficult to promote in production.

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